This work is licensed under the Creative Commons Attribution-ShareAlike License. To view a copy of this license, see the file license.txt, visit http://creativecommons.org/licenses/by-sa/2.0 or send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA. This file represents a composite schema for validation of the following: 1) The use of custom vocabulary source/value pairs and LOMv1.0 base schema (i.e., 1484.12.1-2002) vocabulary source/value pairs 2) Uniqueness constraints defined by LOMv1.0 base schema 3) The use of XML element/attribute extensions to the LOMv1.0 base schema